That something is usually: a cost (example: Sacrifice a creature: [effect]), or an effect (example: Target player sacrifices a creature.) No instruction, no sacrifice
Rishadan Port by Jerry Tiritilli Rishadan Port | Illustration by Jerry Tiritilli This is the happiest, warmest representation of urban life in all of Magic
All of this from just having the Foul Emissary and four lands
A flier might represent a lot of tempo if it can threaten a planeswalker or low life total unchecked but if they just have some reach spider the flying element has little to no value
But upon uncovering the half of a strange gauntlet, Dack is led to a strange new plane: the realm of THEROS, a sun-dappled world ruled by gods and inhabited by mythological beasts
This spell is only as good as your opponents (and your) best creatures in the graveyard, so give it some time before casting to make sure everyone has something worth stealing